Z-inversion type display device with ‘T’-shaped electrode and method of manufacturing the same
a display device and electrode technology, applied in semiconductor devices, instruments, optics, etc., can solve the problems of reducing luminance difference, power consumption too large, and degradation of display quality, so as to reduce or improve the non-uniformity of pixels, reduce or remove flickering or vertical line defects, effect of improving the quality
Active Publication Date: 2017-03-07
LG DISPLAY CO LTD
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Benefits of technology
The present invention relates to a technology that maintains the capacitance of a display device's pixels even when the position of the electrodes changes. This helps reduce non-uniformity between pixels and improves display quality. It also makes it easier to manage the quality of products in a mass production line because the capacitances of each product are maintained to be equal. Previous methods required secondary processes to compensate for changes in capacitance.
Problems solved by technology
Among the inversion driving types, the frame inversion type, the line inversion type and the column inversion type may reduce power consumption compared to the dot inversion type, but have disadvantages in display quality degradation such as a crosstalk phenomenon or an up-down luminance difference.
However, the dot inversion type has disadvantages in that power consumption is too large compared to the line inversion type or the column inversion type.
As described above, in the case of the Z-inversion type display device, the gate electrode layer and the source / drain electrode layers may be misaligned for reasons such as a mask misalignment, and, at this time, there are problems in which the capacitances Cgs of each pixel become different.
Thus, flickering occurs or a vertical line defect occurs.
Method used
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[0041]Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same components will be designated by the same reference numerals although they are shown in different drawings. Further, in the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.
[0042]In addition, terms, such as first, second, A, B, (a), (b) or the like may be used herein when describing components of the present invention. These terms are merely used to distinguish one structural element from other structural elements, and a property, an order, a sequence and the like of a corresponding structural element are not limited by the term. It should be noted that if it is described in the specification that one component is “connected,”“coupled” or “joined” to another ...
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Abstract
The present invention provides a Z-inversion type display device comprising a gate line and a data line that intersect with each other to define a pixel area on a substrate, a thin film transistor that includes a gate electrode, a semiconductor layer, a source electrode and a drain electrode, and a pixel electrode that is formed in the pixel area, and is electrically connected to the drain electrode of the thin film transistor, wherein the drain electrode completely overlaps the gate line such that a drain electrode area is wholly included in a gate line area on a plan view.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority under 35 U.S.C. 119(a) to Republic of Korea patent application no. 10-2014-0052330 filed on Apr. 30, 2014, which is incorporated by reference herein in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention is a technology related to a display device and a method of manufacturing the display device. Specially, the present invention is a technology related to a display device in which pixels are formed in a Z-inversion type, and a method of manufacturing the display device.[0004]2. Description of the Prior Art[0005]With the development of the information society, various types of requirements for a display device for displaying an image are increasing and, recently, various display devices, such as a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP), and an Organic Light Emitting Diode Display Device (OLED), are being used.[0006]Among those display devices...
Claims
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IPC IPC(8): G02F1/1362H01L27/12G02F1/1368
CPCG02F1/136227G02F1/1368G02F1/136286H01L27/124H01L27/1262G02F1/133G02F1/1362H10K59/1213H10K59/1201G02F1/133345G02F1/134309G02F1/13439G02F2201/123
Inventor LIM, DONGGEUNSHIN, KITAEGJO, CHELHEEKANG, JIWON
Owner LG DISPLAY CO LTD